protuberance
Definitions
A thing that protrudes from something else; a bulge, knob, or swelling.
The physical state or quality of being prominent or sticking out beyond a surface.
Examples
The geologist identified a strange, rocky protuberance jutting out from the side of the cliff.
A small protuberance on the surface of the antique table suggested that something was hidden beneath the veneer.
The medical report noted a slight protuberance near the patient's collarbone that required further examination.